mirror of
https://github.com/wiidev/usbloadergx.git
synced 2024-11-18 09:19:17 +01:00
95 lines
3.2 KiB
C
95 lines
3.2 KiB
C
/*
|
|
partition.h
|
|
Functions for mounting and dismounting partitions
|
|
on various block devices.
|
|
|
|
Copyright (c) 2006 Michael "Chishm" Chisholm
|
|
|
|
Redistribution and use in source and binary forms, with or without modification,
|
|
are permitted provided that the following conditions are met:
|
|
|
|
1. Redistributions of source code must retain the above copyright notice,
|
|
this list of conditions and the following disclaimer.
|
|
2. Redistributions in binary form must reproduce the above copyright notice,
|
|
this list of conditions and the following disclaimer in the documentation and/or
|
|
other materials provided with the distribution.
|
|
3. The name of the author may not be used to endorse or promote products derived
|
|
from this software without specific prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
|
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
|
|
AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
|
|
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
|
|
EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef __PARTITION_H
|
|
#define __PARTITION_H
|
|
|
|
#include "common.h"
|
|
#include "fat_cache.h"
|
|
#include "lock.h"
|
|
|
|
// Device name
|
|
extern const char* DEVICE_NAME;
|
|
|
|
// Filesystem type
|
|
typedef enum
|
|
{
|
|
FS_UNKNOWN, FS_FAT12, FS_FAT16, FS_FAT32
|
|
} FS_TYPE;
|
|
|
|
typedef struct
|
|
{
|
|
sec_t fatStart;
|
|
uint32_t sectorsPerFat;
|
|
uint32_t lastCluster;
|
|
uint32_t firstFree;
|
|
} FAT;
|
|
|
|
typedef struct
|
|
{
|
|
const DISC_INTERFACE* disc;
|
|
CACHE* cache;
|
|
// Info about the partition
|
|
FS_TYPE filesysType;
|
|
uint64_t totalSize;
|
|
sec_t rootDirStart;
|
|
uint32_t rootDirCluster;
|
|
uint32_t numberOfSectors;
|
|
sec_t dataStart;
|
|
uint32_t bytesPerSector;
|
|
uint32_t sectorsPerCluster;
|
|
uint32_t bytesPerCluster;
|
|
FAT fat;
|
|
// Values that may change after construction
|
|
uint32_t cwdCluster; // Current working directory cluster
|
|
int openFileCount;
|
|
struct _FILE_STRUCT* firstOpenFile; // The start of a linked list of files
|
|
mutex_t lock; // A lock for partition operations
|
|
bool readOnly; // If this is set, then do not try writing to the disc
|
|
} PARTITION;
|
|
|
|
/*
|
|
Mount the supplied device and return a pointer to the struct necessary to use it
|
|
*/
|
|
PARTITION* _FAT_partition_constructor(const DISC_INTERFACE* disc, uint32_t cacheSize, uint32_t SectorsPerPage,
|
|
sec_t startSector);
|
|
|
|
/*
|
|
Dismount the device and free all structures used.
|
|
Will also attempt to synchronise all open files to disc.
|
|
*/
|
|
void _FAT_partition_destructor(PARTITION* partition);
|
|
|
|
/*
|
|
Return the partition specified in a path, as taken from the devoptab.
|
|
*/
|
|
PARTITION* _FAT_partition_getPartitionFromPath(const char* path);
|
|
|
|
#endif // _PARTITION_H
|